NEW YORK (MarketWatch) -- The yield curve inverted for a second day Wednesday as the yield on the 2-year note moved higher than the yield on the 10-year note, reigniting concerns about an economic slowdown. The 2-year yield last stood at 4.373%, while the 10-year yield stood at 4.365%. The curve inverted for the first time in five years on Tuesday. An inverted yield curve occurs when short-term maturities pay a higher interest rate than longer-term maturities. Such an unusual event typically has foreshadowed a noticeable economic downturn. Usually, a recession has followed.